https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82597
Bug ID: 82597 Summary: ICE at -O2 and -O3 x86_64-linux-gnu in the 32-bit mode: in extract_constrain_insn, at recog.c:2207 Product: gcc Version: unknown Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: su at cs dot ucdavis.edu Target Milestone: --- $ gcctk -v Using built-in specs. COLLECT_GCC=gcctk COLLECT_LTO_WRAPPER=/home/su/software/tmp/gcc/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/8.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../gcc-source-trunk/configure --enable-languages=c,c++,lto --prefix=/home/su/software/tmp/gcc/gcc-trunk --disable-bootstrap Thread model: posix gcc version 8.0.0 20171018 (experimental) [trunk revision 253840] (GCC) $ $ gcctk -m32 -Os -c -w small.c $ $ gcctk -m32 -O2 -c -w small.c small.c: In function ālā: small.c:7:1: error: insn does not satisfy its constraints: void l () { j (); } ^~~~ (insn 56 8 10 2 (parallel [ (set (reg:CCZ 17 flags) (compare:CCZ (plus:SI (reg:SI 2 cx [orig:88 _3 ] [88]) (const_int 1 [0x1])) (const_int 0 [0]))) (set (reg/v:SI 0 ax [orig:91 k ] [91]) (plus:SI (reg:SI 2 cx [orig:88 _3 ] [88]) (const_int 1 [0x1]))) ]) "small.c":6 225 {*addsi_2} (nil)) during RTL pass: pro_and_epilogue small.c:7:1: internal compiler error: in extract_constrain_insn, at recog.c:2207 0x5fbe80 _fatal_insn(char const*, rtx_def const*, char const*, int, char const*) ../../gcc-source-trunk/gcc/rtl-error.c:108 0x5fbea6 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*) ../../gcc-source-trunk/gcc/rtl-error.c:119 0xbc9ead extract_constrain_insn(rtx_insn*) ../../gcc-source-trunk/gcc/recog.c:2207 0xbd33b6 copyprop_hardreg_forward_1 ../../gcc-source-trunk/gcc/regcprop.c:794 0xbd478e copyprop_hardreg_forward_bb_without_debug_insn(basic_block_def*) ../../gcc-source-trunk/gcc/regcprop.c:1173 0xc39a03 prepare_shrink_wrap ../../gcc-source-trunk/gcc/shrink-wrap.c:443 0xc39a03 try_shrink_wrapping(edge_def**, rtx_insn*) ../../gcc-source-trunk/gcc/shrink-wrap.c:667 0x983fbc thread_prologue_and_epilogue_insns() ../../gcc-source-trunk/gcc/function.c:6003 0x9847f2 rest_of_handle_thread_prologue_and_epilogue ../../gcc-source-trunk/gcc/function.c:6488 0x9847f2 execute ../../gcc-source-trunk/gcc/function.c:6530 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions. $ ----------------------------------------------------------------- unsigned b, c, e, g; int a (h, i) { return h > 0 && i ? : h + i; } int d (int h, int i) { return h; } long long f (long h, long long i) { return h + i; } void j () { long k = f (d (1, e = c), g); a (k) && (b = 0); } void l () { j (); }